SPECTRA OF LOCAL AND AVERAGED SCALAR FIELDS IN TURBULENCE

被引：17
作者：
CHILLA, F [1 ]
CILIBERTO, S [1 ]
INNOCENTI, C [1 ]
PAMPALONI, E [1 ]
机构：
[1] ECOLE NORMALE SUPER LYON, F-69364 LYON, FRANCE
来源：
EUROPHYSICS LETTERS | 1993年 / 22卷 / 01期
关键词：
D O I：
10.1209/0295-5075/22/1/005
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report experimental evidence of a new property of turbulent thermal convection. We show that the spectra of temperature fluctuations obtained from local and averaged measurements coincide. This new result is theoretically demonstrated by using only the hypothesis of isotropy of the turbulence field and it could be applied to the transport of passive scalars in any turbulent flow.
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页码：23 / 28
页数：6
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